As the former Gunners boss celebrates his 70th birthday this week, we look back at some of his most fiery relationships with other managers

These are the babies – the irrepressible young upstarts, if you will – of Egland’s proud league system

Before the two take each other on at Old Trafford this weekend, revisit some greats: Eric Cantona, Kenny Dalglish, Dimitar Berbatov and Steven Gerrard all star in our selection of the most memorable clashes from English football's most trophy-laden rivalry